[poyu]

I had a problem with the monitor where the EDID gets constantly erased if the HDMI cable is unplugged in certain conditions. Usually there's a service menu hidden somewhere you can enable so that the EDID EEPROM becomes writable. That doesn't seem to work in my case, so I ended up opening the monitor and hard wired the write enable pin. This happens so often (it's an old monitor I got for free) I drilled a hole and put a switch on the pin lol.